Synonyms
(S)-2-Amino-3-(4-hydroxyphenyl)propionic acid; 3-(4-Hydroxyphenyl)-L-alanine; 4-hydroxyphenylalanine,
L-Tyrosine;Tyrosine, L-;«alpha»-Amino-«beta»-(4-hydroxyphenyl)propionic acid;(-)-«alpha»-Amino-p-hydroxyhydrocinnamic acid;p-Tyrosine;Benzenepropanoic acid,
«alpha»-amino-4-hydroxy-, (S)-;L-p-Tyrosine;L-Phenylalanine, 4-hydroxy-;Propanoic acid,
2-amino-3-(4-hydroxyphenyl)-, (S)-;L-Tryosine;L-2-Amino-3-p-hydroxyphenylpropanoic acid
Technical Data
CAS Number: 60-18-4
Molecular Formula: C9H11NO3
Molecular Weight: 181.19
Beilstein Registry Number: 392441
EC Number: 200-460-4
FabriChem Specifications
| ITEMS | SPECIFICATIONS |
|---|---|
| Description | White crystalline powder or colorless crystals |
| Identification Infrared Absorption* | Passes Test |
| Specific Optical Rotation [a] 25 D | -9.8° to -11.2° |
| Amino Acid HPLC | Main Peak is Tyrosine |
| Chlorides | ≤ 400 ppm |
| Sulfates | ≤ 400 ppm |
| Heavy Metals (as Pb) | ≤ 15 ppm |
| Residual Solvents | As per USP |
| Iron | ≤ 30 ppm |
| Ninhydrin-positive substances | TLC |
| Loss on Drying | 0.3% Max. |
| Residue on Ignition | 0.4% Max. |
| Assay | 98.5 – 101.5% |
| Microbiology: | |
| Total Viable Aerobic Count | ≤ 100 CFU/g |
| Yeast & Mold | ≤10 CFU/g |
| E. Coli | Negative / 10 g |
| Salmonella | Negative / 10 g |
| Enterobacteriaceae | Negative / 10 g |
| Pseudomonas Aeruginosa | Negative / 10 g |
| Staphylococcus Aureus (coagulase) | Negative / 10 g |
